Mount Rainier National Park Weather Forecast

    • 57
    • 68

    Increasing Clouds

    • 53
    • 72

    Chance Rain

    • 44
    • 56

    Chance Rain Showers

    • 43
    • 53

    Partly Sunny

    • 49
    • 63

    Mostly Sunny

    • 47
    • 62

    Partly Sunny

    • 44
    • 58

    Partly Sunny

Today 20 Aug Cascades of Pierce and Lewis Counties

Sunny. Freezing level near 14500 feet.

Tonight 20 Aug Cascades of Pierce and Lewis Counties

Mostly clear. Freezing level near 15000 feet.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Rainier National Park Temperature Statistics

August Temperature

Stampede Pass (31.1 miles)

  • Lowest 3 August, 2026

    42.1 °F

  • Average August

    58.4 °F

  • Highest 5 August, 2026

    80.1 °F

Climate (2021–2026)

Stampede Pass (31.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    41.5 °F

  • Average High 2021–2026

    48.2 °F
Get WillyWeather+ to remove ads